Java must be real hardware on PCs !

We are working on Java Tech for 10+ years as I see the most disadvantage of Java is now ,
its still Virtual , for 10+ years of experience I've seen is , always hardware friendly software won the race like
OpenGL and DirectX on Graphics side.
Hardware compatible systems forces developers to use them as a standard more.
If OpenGL was just software layer , all people would do their own Engine.
But its stopping them to use they use them for best performance.
And for end users , they are happy because OpenGL hardware friendly and
that makes OpenGL very fast and make both end user happy.
Whats the lack of things on Java Tech ?
Its still Virtual Machine.
Java should be real machine on PC's !!!
As i read , AMD LWP will be released for .NET and Java VM
but in my opinion , it cant help Java for to be faster.
Java has IO and memory problem so how can these problems can be solved ?
In my opinion , if you implement simple Gigabyte i-RAM on 1 PC ,
http://www.gigabyte.com.tw/Products/Storage/Products_Overview.aspx?ProductID=2180
You will see Java will run very fast startup time and class loads , image loading operation will be very fast !!!
That means on just IO operations java will be faster.
Yes but its not solving problem %100 , so ?
You should implement static caches for Java on PC's instead of making java on Operating System.
Some people know about UPNP ,
I've opened JUPNP project on dev.java.net :
https://jupnp.dev.java.net/
UPNP is now being used on hardwares of PC's on modems especially!
But i wished to see JXTA on ADSL and future of modems.
JXTA would be cool technology having all modems these tech.
UPHP doesnt have capabilities what JXTA has !
But it forces developers to use UPNP because all hardware modems have that Technology!
The most disadvantage of Java Swing Apps is ,
They all store their Swing Images on HDD ,
They also should be stored on GPU hardware.
Yes I've read Java can access on GPU too but i mean all swing images and object must be in seperate static cache of Graphics card so
when PC startup , they must be loaded on Graphics Card.
Java must have a classes that accesses,
MMX , SIMD capabilities of hardwares.
But they shouldnt be done on JNI !!!
JNI makes penalty calls , they sould be native instructions.
You should make new Generation of PC's having
static java caches like Gigabyte iRam
same iRam should be on Graphics adapter Swing too...
Maybe you say it will be expensive PC's but people paying 250$+ for DirectX compatible graphic hardwares!
think more how much cost iRam on Java/Swing Graphic Adapter or JXTA Compatible ADSL/Cable/?
If , these technologies will be done , i'm sure within 7 years Java will take place much and much more on markets!
Send Java and .NET Technologies to hell and as i read your all hardware servers is World's best ,
if you do same best hardwares for end users it will change destiny of Java/JavaFX.
Never think virtual , real machines!!!
PC's really important technology then any other technology to force people accept technologies!
Dont forget Java needs Fast IO Hardware System now!
Take care all Sun Group
Regards,
Kadir BASOL

WTF? It's hard enough to get people to download the latest JRE. How many folks do you think will be willing to go out and purchase a new "Java Card" for their PC every two years?

Similar Messages

Java must be hardware integrated on standard PC's

We are working on Java Tech for 10+ years as I see the most disadvantage of Java is now ,
its still Virtual , for 10+ years of experience I've seen is , always hardware friendly software won the race like
OpenGL and DirectX on Graphics side.
Hardware compatible systems forces developers to use them as a standard more.
If OpenGL was just software layer , all people would do their own Engine.
But its stopping them to use they use them for best performance.
And for end users , they are happy because OpenGL hardware friendly and
that makes OpenGL very fast and make both end user happy.
Whats the lack of things on Java Tech ?
Its still Virtual Machine.
Java should be real machine on PC's !!!
As i read , AMD LWP will be released for .NET and Java VM
but in my opinion , it cant help Java for to be faster.
Java has IO and memory problem so how can these problems can be solved ?
In my opinion , if you implement simple Gigabyte i-RAM on 1 PC ,
http://www.gigabyte.com.tw/Products/Storage/Products_Overview.aspx?ProductID=2180
You will see Java will run very fast startup time and class loads , image loading operation will be very fast !!!
That means on just IO operations java will be faster.
Yes but its not solving problem %100 , so ?
You should implement static caches for Java on PC's instead of making java on Operating System.
Some people know about UPNP ,
I've opened JUPNP project on dev.java.net :
https://jupnp.dev.java.net/
UPNP is now being used on hardwares of PC's on modems especially!
But i wished to see JXTA on ADSL and future of modems.
JXTA would be cool technology having all modems these tech.
UPHP doesnt have capabilities what JXTA has !
But it forces developers to use UPNP because all hardware modems have that Technology!
The most disadvantage of Java Swing Apps is ,
They all store their Swing Images on HDD ,
They also should be stored on GPU hardware.
Yes I've read Java can access on GPU too but i mean all swing images and object must be in seperate static cache of Graphics card so
when PC startup , they must be loaded on Graphics Card.
Java must have a classes that accesses,
MMX , SIMD capabilities of hardwares.
But they shouldnt be done on JNI !!!
JNI makes penalty calls , they sould be native instructions.
You should make new Generation of PC's having
static java caches like Gigabyte iRam
same iRam should be on Graphics adapter Swing too...
Maybe you say it will be expensive PC's but people paying 250$+ for DirectX compatible graphic hardwares!
think more how much cost iRam on Java/Swing Graphic Adapter or JXTA Compatible ADSL/Cable/?
If , these technologies will be done , i'm sure within 7 years Java will take place much and much more on markets!
Send Java and .NET Technologies to hell and as i read your all hardware servers is World's best ,
if you do same best hardwares for end users it will change destiny of Java/JavaFX.
Never think virtual , real machines!!!
PC's really important technology then any other technology to force people accept technologies!
Dont forget Java needs Fast IO Hardware System now!
Take care all Sun Group
Regards,
Kadir BASOL

WTF? It's hard enough to get people to download the latest JRE. How many folks do you think will be willing to go out and purchase a new "Java Card" for their PC every two years?

Dataflow in HLS doesn't work in real hardware implementations (13 benchmarks)

Hi all,
I use Vivaod HLS to generate a hardware IP core using streaming interface (hls::stream) and implement it using Vivado. (ARM controls DMA to send the streaming data to hardware IP and after the hardware processing the data, use DMA to transfer the result back to memory from hardware).
The C code in HLS is applied with Dataflow pragma, and the initialtion interval (II) is less than the latency reported by HLS (This is correct, because we are utilized the task level parallelism). Theoretically, the execution time should be like the following graph (Providing 4 frames data and invoking this hardware IP for 4 times) , which means that the execution cycle should be 16386*2 + 95811 * 4
However, in reality, when I implement it on real hardware and measure the execution cycle via SCUtimer on ARM, the execution time is (16386*2+ 95811) * 4, which means that we do not have any benefit from this "dataflow" task level parallelism. The whole hardware is correct and all the results sending back from device to memory are verified. The way I invoke this hardware in the host code is similar to the following pattern:
for (i=0; i<4; i++) {
start timer st;
1. Send i-th frame data from DMA to device;
2. Send i-th frame result from device to DMA;
end timer et;
time += et-st;
Any steps or things I miss here? Does anyone make the dataflow work on the real implementation? Or it just works on the HLS and can not support in Vivado.
Thanks,
Henry

henry.c wrote:
for (i=0; i<4; i++) {
start timer st;
1. Send i-th frame data from DMA to device;
2. Send i-th frame result from device to DMA;
end timer et;
time += et-st;
Hello Henry,
The way you test this does not reflect your flow / dataflow diagram.
In your test, the VHLS IP runs between steps 1 and 2 but you are still serially executing everything : DMA in , buffer in , compute , buffer out, DMA out, DMA in, buffer in, compute, buffer out, DMA out , DMA in, buffer in etc so the total time is the sum of the individual execution.
In your flow diagram (which is the same as the UG description for dataflow) you have the input buffering for frame N happening before the end (and even before the start) of output buffering of frame N-1; so you need to have your embedded code processor doing exactly that.
I'm not so familiar with the way the DMA works and if you can stack up transactions beforehand; that would be the easiest, otherwise you'll have to make it work some other way.
Also your timing measurements should be outside the for loop so that you measure the total execution. (<- that sentence is the EDIT)
I hope this helps.

Real hardware requirements

Hello all,
I would like to know the real hardware requirements for the calendar server. There is of course the official statement of Sun but I would like to know when the hardware reaches its peak levels. I experienced with prstat a usage of 12% CPU usage on a Netra T1 when I log into the calendar and do some larger repeating schedules. I wonder what happens if 10 or 20 user do the same at the same time?
Thanks for your comments and tips.
Roberto

Hallo Roberto,
du hattest �ber den WDR angefragt, ob ich tats�chlich der Robert aus deiner Jungend bin. Yes, I am the one, wie du schon an der Kopfzeile sehen kannst.
Allerdings hat die Mail von dir, die ich �ber Umwege bekommen habe, deine Mailadresse nicht mehr gehabt. Vielleicht finde ich dich ja auf diesem Wege, am besten, du antwortest mir dann �ber meine offizielle Adresse: [email protected]
Es w�r toll, wenn wir auf diese Weise nach all den Jahrzehnten in Kontakt k�men - du geh�rst interessantewrweise zu den Menschen aus meiner Vorzeit, die ich nie wirklich vergessen habe...
Erst mal Gr��e und ich w�rde mich �ber eine R�ckmeldung freuen.
Robert

Java concurrent in real time environment

Hi David,
we intend to use in our implementation classes from java.util.concurrent.
for example:
BlockingQueue, hashMap etc... .
i read in some documentation from 2006 that jrts not working well
with this packages.
is it still relevant for now???
second question (it more request than a question):
when we read jrts version we are getting 1.0.2 even our jrts version is 2.1.
i guess you just need to update the version.
Thanks
Gabi

Hi Lior,
Priority inversion is about anything that can delay a high priority thread waiting for a low priority one which itself is prevented from running because middle priority threads are running. This is not only about the "synchronize" statement or "lock". This is about any scheme that allows threads to cooperate.
When you use "synchronize", a RTSJ implementation will use PIP to ensure that the low priority thread is boosted to the high priority. This basically ensure that the delay for the high priority thread is minimized. Thus, using "synchronize" is a way to avoid priority inversion in your application, not what causes the priority inversion.
However, when you use the locks defined in j.u.c (like java.util.concurrent.locks.ReentrantLock), the high priority thread can be blocked on that lock and will not boost the low priority thread. If there are several thread trying to acquire the lock, it is not even guaranteed that the highest priority contender will get it when it is released. Other policies like FIFO can be implemented. It might in some cases be the right policy for your application... but you must be aware of the policy if this is in the time-critical part of your application.
Similarly, suppose you implemented the management of a resource with a java.util.concurrent.Semaphore. The low priority thread could own a resource and is expected to release() it when it no longer needs the resource. If the high priority thread needs the same resource, it has no way to boost the low priority thread to speed-up the process. In the worst case, the low priority thread could be completely preempted by other real-time threads and may never use and release the resource. This applies to all the synchronizers in j.u.c (CyclicBarrier, Exchanger, ...). This is not necessarily an issue. This may be the behavior you want.
Last example, suppose you want to use a ThreadPoolExecutor to automatically parallelize some work. You must be aware that this does not take into account the priority of the thread that needs that job to be executed. Once again, this is OK if this work is not in the time-critical part of your application and if the thread that is waiting for the job does not own a resource that could be necessary for a higher priority thread.
As a summary, if you use j.u.c, you must take into account the fact that there will be no boosting and no guarantee based on the priority. If you are sure that priorities do not matter, then you can use j.u.c. and benefit from these extended APIs .
Bertrand.
Edited by: delsart on Feb 18, 2009 5:11 PM

Java update and real player update not compatable with firefox 6 on Windows 7. Will they still function right?

When i opened firefox today , there were updates but when it tried to update it came back that java and real player updates were not compatable with my firefox. I have Firefox 6. Will these 2 programs still work all right if they are not updated?
I'm sorry I don't know what installed plugins I have. After putting in search it says I have Java 6 Standard Edition Update 26. I have Real Player(tm)(win32), Version 14.0.4 652. Hope that is enough information

I just had a similar issue and I ended having to manually clean up the registry to get Java working again.
I just got a new computer at work and it had Java 7 installed but it turns out an app we need to use at work doesn't work with Java 7, only Java 6.
I uninstalled Java 7 and installed Java 6 but Firefox was not showing the Java plugin as installed. I tried all sorts of things, including uninstalling and reinstalling Firefox and none of it worked. Finally I again uninstalled Java and then I searched for "Java" in the registry and found TONS of entries still in there for Java, including for Java 7. I manually deleted all the entries (WARNING: this is extremely risky) rebooted, then installed Java 6 and now it's working fine.
I really hate it when uninstallers leave stuff behind. It just makes a mess.

Can Java Applications deal with hardware without use JNI

Thanks!!

No.
The JVM deals exclusively with existing OS software. So, for example, even though the hard drive is hardware, the JVM uses the OS io routines to talk to it.
If you have a custom piece of hardware then you will need something similar.
If it is a serial/parallel device then you can look at the comm api.
If it is really unusual then you could write a miny driver server than uses sockets. Then the java app would just use on box sockets to control it so no JNI would be needed. (But C/C++ still would be required for the server.)

Says Java must be updated, when i run software update, no updates

a few programs say that i must update my java to 1.6 from my current 1.5. when i try to run software update, it checks for new updates and says that my computer is up to date. i need to get java 1.6 so please help me out!

Hi vdubin_allday, and a warm welcome to the forums!
Java numbers can be confusing, but Java 1.6 is for Leoprad 10.5.4 or more.
Now there is a Mac OS X 10.4, Release 6 for J2SE 5.0 and Java 1.4 on Mac OS X 10.4.10 and later. This release updates J2SE 5.0 to version 1.5.0_13 and Java 1.4 to version 1.4.2_16.
http://developer.apple.com/Java/download/

!!!-Need help for terminating a Java thread in real time

Hi everyone!
I use J2SDK1.4.1 on a Unix platform.
I want to terminate (or stop) a running java thread, which is dealing with time consuming tasks, in real-time (for example: the delay before the thread is terminated can't beyond one second), However, I don't know which techniques I can use to make sure the previous (or old) running java threads have been terminated?
Could you please give me any help if you can?
Any suggestion or reply will be kindly appreciated!
Thanks!

Thanks very much, jverd !
I do set a flag that the thread should periodically check !
Well, the scenario is like this:
1. the thread read line by line (using BufferedReader) string from a probably huge-size file
2. analyse each string read from the file if required (some strings may be omitted based on the user's operations), the analyzing process is a time-consuming task, and the analysing process may be terminated at any time the user want.
3. record only the strings that have been analyzed by the previous process into a recording file
The problem I meet is as follows: (Here, I suppose that it should take at least 30 seconds to finish analyse all the strings in a given huge file )
1. the user start the analysing process, and run it for only 5 seconds,then stop the analyzing.
2. the user start the analysing process again from the begining of the file(analyse the strings within the same file as previous step), and then stop the analysing process at 10 second. (it means, this time the analysing process is running for 10 seconds, still haven't finish analyse all the strings in the file).
Once I open the record file, I saw some of the strings in the recording file have been repetitively record for 2 times, and the repetitive strings are just the strings the analysing time from at 5 second to at 10 second.
And the repetitive times are depend on how many time the user start and stop the analysing process using the same file. for example, based on the above two steps, the user do the third step as follow:
3. the user start the analysing process once again, analyse the same file,too. And run it for 15 seconds
This time open the recording file, this time I saw some of the strings have been repetitively record for 3 times, and the repetitive strings are just the strings the analysing time from at 10 second to at 15 second.
So, I guess the problem is probably because the previous analysing threads haven't been terminated completely, or say they just are blocked or set as inactive etc., then when the next time start the analysing process, the old threads will be reactive,and rerun ffrom the last time they are blocked.
I hope you had catched what I mean, if you not, please ust let me know, I'll try to explain it again.
Thanks once again!

Using Java to control external hardware

Hi all,
I'm new to the forums, I am an experienced Java developer for the internet and have done various GUI based academic and personal projects.
What I want to work on at the moment is basically a swing based controller program which will controller some hardware which switches LEDs on and off, moving later to maybe fans and motors and stuff.
My initial thoughts were get an LED matrix connected using a USB port, and then get a USB API to send commands to this. It would be far better if I somehow got a control board connected (wired or wireless) and then used Java to send over commands for a start to turn LEDs on and off.
In essence I'm in need of answers to 2 questions:
1) what hardware controller to use for this project, and how is it to be connected to my pc.
2) which API?
Thanks, I look forward to your replies.
Harry
Edited by: HPowar on Feb 25, 2008 5:07 AM

I believe that parallax makes a microcontroller (Javelin ???) with some sort of java vm in firmware.
Depending on your budget and assuming you want to go the microcontroller route, it might work for you.
Edited by: johndjr on Feb 25, 2008 8:57 AM

Installing Java Stand alone Application on other PCs

Dear All
I am very new user to Java programming. I have recently finished developing basic Java Application that interacts with MySQL Database. The application does pretty standard database tranctions.
Now i would like to install this finished appliction on other PCs as stand alone program (hope i am making myself clear here). Sort of I need to make an installation package that will install the Basic application and MySQL database on the the other PCS.
Please desparetly help needed on this matter. I appreciate all your inputs Thank you.

it would be much much easier if you weren't using MySQL to be honest. if you used a pure-java database such as Hypersonic, the database could just be bun dled as a bean with your application.

Internal functioning of java clock...hardware level or at O.S. level

I have used serversocket timeout and thread wait function in my project.But now for documentation I want to know how the java clock actually works. I dont want to know about epoch time or something similar. But something like is java clock global or local???Why is java time and system time when calculated comes different and why is the value calculated everytime for the same program comes out to be different???
Earliest reply will be appreciated.
Thanks...

abheyb wrote:
I expected a little more explainatory answer.
To brief up if I am using java programs on different machines and I wanted to know that whether the clock on which this distributed system works will be same i.e. the time is local and different for individual machine or global and same for all machines if they start at the same timestamp.But in your very first post you ranted away about not wanting to know about "epoch time or something similar".
The true problem with your question is that you are blathering on about multiple topics of which you know nothing about and are thus confusing all diiferent issues into one big mess.
So perhaps we can straighten that out 'kay? First of all you muttered about hardware in your first post and your thread subject but it appears from this post that hardware has blessedly little to do with your actual question which I suspect is something to do with timezones. It might interest you to know that the display of a time is independent from it's internal value. So what might be 3pm for me might be 3am for you but if both dates represent the exact same moment in time then the value held by the Date object in Java is in fact the same.
If this didn't answer your question then please elucidate on what exactly you are stuck on with this "global" thing.

How to check whether Java 3d is using hardware acceleration?

Hi
I just started looking into Java3d api. I am going through the tutorial examples. When I run it on Windows with JDK1.4.2, the app runs, but taskmanager shows cpu usage is around 55% of my 3GHz Intel processor.
I am sending the following VM parameters
-Djava.library.path=C:\progra~1\Java\Java3D\bin -Dj3d.rend=ogl -Dj3d.debug=true
I tried Direct3D as well by passing -Dj3d.rend=d3d. I don't see much difference in cpu usage. The sample I am playing is the one where you create a ColorCube and rotate it on a timeline. Pretty straight forward code taken from the tutorial.
I am wondering
a) Why is my cpu at 55% if it is using h/w acceleration?
b) Is there any way to find out whether Java is using software renderer vs h/w renderer.
I used sys internals processexp tool to look at the stack of java thread that is spinning the cube. I don't see any references to opengl or j3d dlls in the call stack.
I appreciate ur help.
Thanks

check this link, it queries the properties of your system:
http://download.java.net/media/java3d/webstart/test/QueryProperties.jnlp

To check the source code(VI) in absence of real hardware

I need to check the VI , which is developed to measure pressure with pressure transducer.
Later this VI is deplyed in the Test stand system as .exe file. At the test stand system we have all the hardware from the PCI DAq card to the pressure transducer.
But the system where the software is there dont have the hardware.
So how can i check the code in absence of hardware?
Can the Simulate signal will be helpful or we should need atleat pci-Daq card and waveform generator to check the code.
Any suggestions in this regard will be helpful
Many thanks
Regards
Kirit

Hi Kirit,
You should go in MAX, and under My System, right click on "Devices and interfaces" then 'Create new ' and then 'NI-DAQmx simulated device'. In the M series or any , you can find both PCI, PXI cards.Select the particular device and click ok. This should allow you to test your code with a simulated device.

[SOLVED] New arch install from Virtualbox cannot boot on real hardware

Hi,
I'm trying my luck with installing Arch on physical disk through Virtualbox. I followed Wiki and managed to install system on the disk. However, I am unable to boot it outside VM.
I have two physical disks - /dev/sda and /dev/sdb. I have installed Arch on /dev/sda1. It is there, I can see the files from my current OS and it does work in VM. /dev/sda1 is bootable.
However, when I boot my PC from /dev/sda rootfs fails to load kernel image - it says it can't be found. I tried specifing init path in Syslinux.cfg using /dev/sdxX and UUID and even PARTUUID but none worked. When in rootfs, I lsed /dev/disk/by-uuid and found that rootfs sees only one of my two disks, /dev/sdb. I find it really strange.
I followed below advise found on forums:
- Verify that mkinitcpio.conf lists "block" hook
- Create a new kernel image with mkinitcpio -p linux
- Refer to your partition by UUID
- If above doesn't work, try PARTUUID
None of these worked. I believe the reason for this is that the issue is not with how I reference the disk nor how the mkinitcpio works but with the disk not being available for rootfs at all. Alas, I have no experience with disks other than simple partitioning, so I'm not sure where to start.
Fdisk output:
Disk /dev/sda: 931,5 GiB, 1000204886016 bytes, 1953525168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x99ea4d63
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 314779647 314777600 150,1G 83 Linux
/dev/sda2 314779648 1153640447 838860800 400G 83 Linux
/dev/sda3 1153640448 1157834751 4194304 2G 82 Linux swap / Solaris
Disk /dev/sdb: 465,8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x75a6998e
Device Boot Start End Sectors Size Id Type
/dev/sdb1 * 2048 616447 614400 300M 83 Linux
/dev/sdb2 616448 210331647 209715200 100G 83 Linux
/dev/sdb3 210331648 241788927 31457280 15G 83 Linux
Any ideas? Suggestions and help will be appreciated!
Last edited by karm (2014-12-08 03:56:35)

Sleep is for the weak.
So I've read that article and found what the issue was.
Turns out I automatically followed previous advise without giving it some thought and run mkinitcpio from Virtualbox. Which does not make sense because the whole point of this is to prepare kernel image to run on other hardware than provided by VM. So what I did to fix this:
1. Installed arch-chroot on VM
2. Mounted /dev/sda1 on my host machine and chrooted into it using arch-chroot
3. Run mkinitpcio -p linux
4. Reinstalled boot loader just in case with syslinux-install_update -iam /dev/sda1
5. Adjusted /boot/syslinux/syslinux.cfg to work with new configuration:
5.1 set root=UUID=..... to be certain it picks the right partition
5.2 add proper systemd init path APPEND=/usr/lib/systemd/systemd
And it does work - I'm posting from my new shiny system. Thanks a lot ackt1c!

Java must be real hardware on PCs !

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